5 string Cobalt with a 050 G string

[Stormbringer]

Hi

Why we don't have a cobalt set of 5 strings bass lihe these?
050-070-085-105-135

or even a hybrid like only with the G string more massive?
050-065-080-100-130

I'm using cobalt strings, I really love it, but I feel I would enjoy even more with a "power" G.

thanks